
Sidedoor
More than 154 million treasures fill the Smithsonian’s vaults. But where the public’s view ends, Sidedoor begins. With the help of biologists, artists, historians, archaeologists, zookeepers and astrophysicists, host Lizzie Peabody sneaks listeners through the Smithsonian’s side door, telling stories that can’t be heard anywhere else. Check out si.edu/sidedoor and follow @SidedoorPod for more info.
Latest episodes

Jun 25, 2025 • 31min
Bloodsuckers!
Leeches don’t get a lot of love. They’re slimy, wriggly, and, well, they suck—blood that is. But there’s a lot to learn about the lowly leech. Led by a troupe of Smithsonian experts, we’ll discover how these toothy hangers-on wormed their way into medical practices, performance art, and EVERY human cavity. Yes, even that one. It's a journey of discovery from the swamp to the stage and deep into the vaults of the Smithsonian. And it just may leave you with a little more appreciation (dare we say, love?) for the bloodsuckers.Guests: Anna J. Phillips, research zoologist and curator of Clitellata and parasitic worms at the Smithsonian’s National Museum of Natural HistoryRachel Anderson, project specialist at the Smithsonian’s National Museum of American HistoryJosh T. Franco, national collector at the Smithsonian Archives of American Art, former Smithsonian Artist Research Fellowship selection committee memberRoberto Sifuentes, performance artist and arts instructor at the School of the Art Institute of Chicago, former fellow with the Smithsonian Artist Research FellowshipAram Han Sifuentes, leech wrangler, social practice fiber artist, writer, curator, and adjunct professor at the School of the Art Institute of Chicago

Jun 11, 2025 • 34min
The Giving Game
The Gilded Age was a time of unparalleled wealth and prosperity in America — but it was also a time of staggering inequality, corruption, and unchecked power. Among its richest figures was Andrew Carnegie, the steel magnate who built his fortune on the backs of low-paid workers, only to give it away — earning him the nickname the Godfather of American Philanthropy. He didn’t just fund libraries and universities — he championed a philosophy: that it was the duty of the ultra-wealthy to serve the public good.But, as it turns out, even philanthropy is a form of power. So, what exactly have wealthy philanthropists done with their power? We explore that question at the Cooper Hewitt, Smithsonian Design Museum, inside Carnegie’s former mansion. There, a board game called Philanthropy invites players to reimagine the connection between money and power — not by amassing wealth, but by giving it away.Guests: Christina de León, Associate Curator of Latino Design at the Cooper Hewitt, Smithsonian Design Museum Tommy Mishima, artist and co-creator (with Liam Lee) of the installation “Game Room” in Cooper Hewitt's triennial Making Home David Nasaw, author of the biography Andrew Carnegie

9 snips
May 28, 2025 • 42min
Space Jams
Ann Druyan, the creative director behind the Voyager Golden Record, shares her insights on curating the ultimate mixtape for potential extraterrestrial life. She reveals the fascinating blend of art, science, and culture that went into selecting music and images to capture humanity's essence. The conversation touches on the humor and complexities of communicating with the cosmos, and how love and music intertwine in this grand endeavor. Druyan also reflects on the record's legacy and what it reveals about us to potential alien listeners.

May 14, 2025 • 41min
Zoo's Clues
In this fascinating conversation, Kali Holder, an anatomic pathologist at the Smithsonian's National Zoo, shares her insights into the mysteries of animal health. She dives into intriguing cases, like the dizzy kudu and a rhino with an unexplained skin disease. Kali describes her work in the necropsy lab, revealing the emotional and scientific challenges faced in animal healthcare. She also touches on the complex social dynamics of naked mole rats and the interconnectedness of ecosystem health and wildlife conservation. Get ready for a deep dive into veterinary forensics!

Apr 30, 2025 • 38min
Writing on the Wall
In this engaging discussion, Cita Sadeli, known as MISS CHELOVE, dives into the transformative impact of public art. As a muralist and designer, she highlights how bold color and symbolism can reshape urban identities. She shares her journey from personal loss to creating meaningful community murals that inspire locals. The conversation also touches on the significance of public spaces in storytelling and cultural expression, illustrating how art fosters connections and reflects the vibrant tapestry of community life.

Apr 16, 2025 • 29min
Cellphones Rock
Cellphones put the power of the world at our fingertips. With the touch of a finger, you can instantly connect with your doctor, have food delivered to your office or simply obliterate your niece at Words with Friends. And it's all made possible by rocks formed millions of years ago, deep underground. Join us as we bust open our devices to figure out how these stones power our phones.Guests:Joshua A. Bell, curator of globalization at the Smithsonian’s National Museum of Natural HistoryMichael Wise, geologist in the department of mineral sciences at the Smithsonian's National Museum of Natural HistoryJosh Lepawsky, professor of geography at Memorial University of Newfoundland

Apr 2, 2025 • 35min
The Art of the Fist
The United States has more martial arts schools than any other country – by far. Chances are you or someone you know practiced karate or another martial art growing up. While martial arts gained popularity in the U.S. for many reasons, one name stands out: Jhoon Rhee. Known as the Father of American Taekwondo, Rhee famously taught Bruce Lee how to kick and Muhammed Ali how to punch. His bare-knuckled American dream made an impact on generations of Americans.Guests: Terence Nicholson, a D.C.-based artist. Creator of Safety Jacket: A Mourning in ChinatownSojin Kim, curator for the Smithsonian Asian Pacific American Center’s exhibition: Sightlines, Chinatown and BeyondM. Aziz, an Assistant Professor of African American Studies in the Department of American Ethnic Studies at the University of WashingtonChun Rhee, son of Jhoon RheeJimmy Rhee, son of Jhoon Rhee

Mar 19, 2025 • 37min
Asteroid Tag
A billion-dollar spacecraft, a daring deep-space mission, and one of humanity’s biggest questions: Where did we come from? NASA’s OSIRIS-REx set out to collect a pristine sample from asteroid Bennu, a cosmic time capsule that may hold clues to the origins of life in our solar system. But the journey was anything but easy.Guests:Erica Jawin, postdoctoral research geologist in the Center for Earth and Planetary Studies at the Smithsonian’s National Air and Space Museum and member of the OSIRIS-REx missionTim McCoy, curator of meteorites at the Smithsonian's National Museum of Natural History and deputy mission sample scientist for the OSIRIS-REx missionMike Moreau, deputy project manager in the Space Science Mission Operations Project at NASA’s Goddard Space Flight Center

Mar 5, 2025 • 35min
Poison and Poisonability
When we think of serial killers, we tend to think of men—Ted Bundy, Jeffrey Dahmer, Jack the Ripper. But in the 1800s, the deadliest killers often wore corsets. In fact, so many women were arrested for serial poisoning that the era became known as the “Golden Age of Arsenic.” Journey back in time to trace the crimes of Lydia Sherman, a Victorian Era femme fatale who left a trail of bodies in her wake. How did she — and women like her — evade capture for so long? And how did their murders help give rise to modern criminal forensics?Guests: Kristen Frederick-Frost, curator of science at the Smithsonian's National Museum of American History Lisa Perrin, author and illustrator of The League of Lady Poisoners Deborah Blum, author of The Poisoner's Handbook. Director of the Knight Science Journalism Program at MIT.

Feb 19, 2025 • 41min
Right Stuff, Wrong Sex
There was a time, before Neil Armstrong set foot on the moon, when some researchers believed women were better suited for space than men. In 1961, a group of female pilots—today known as the Mercury 13—quietly aced NASA’s toughest astronaut tests, even outperforming the Mercury men in some areas. But with the space race heating up, their mission was grounded— but not by science. But what became of America’s first female astronaut candidates?Guests: Margaret Weitekamp, chair of the space history department at the Smithsonian’s National Air and Space Museum, and author of Right Stuff, Wrong Sex: America’s First Women in Space Program andSpace Craze: America’s Enduring Fascination with Real and Imagined Spaceflight Emily Calandrelli, engineer, author, and TV show host of Emily’s Wonderlab and Xploration Outer Space